Conductance and viscosity studies of sodium dodecylsulfate in aqueous solutions of dimethylsulfoxide and methanol

被引：43

作者：

Chauhan, MS ^{[1
]}

Kumar, G ^{[1
]}

Kumar, A ^{[1
]}

Sharma, K ^{[1
]}

Chauhan, S ^{[1
]}

机构：

[1] Himachal Pradesh Univ, Dept Chem, Simla 171005, Himachal Prades, India

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2001年 / 180卷 / 1-2期

关键词：

ionic surfactant; dimethylsulfoxide; methanol; conductance; viscosity; micellization;

D O I：

10.1016/S0927-7757(00)00761-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 [物理化学]; 081704 [应用化学];

摘要：

In this paper, we report the effect of dimethylsulfoxide (DMSO) and methanol (MeOH) on solution behaviour of sodium dodecylsulfate (SDS) in pre- as well as in post-micelle regions of aqueous solutions from conductance and viscosity measurements. The data demonstrate the inhibitory effect of both these additives on miccilization of SDS, which however is relatively large in case of DMSO. Such an effect of these additives is attributed to dehydration of micelle surface as a result of strong intermolecular interactions, and reduction in counterion binding resulting from its preferential solvation with DMSO and MeOH. To aid this evaluation, a transition-state treatment of the relative viscosity of SDS solutions is also described in pre- and post-micelle regions. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：111 / 119

页数：9

共 19 条

[1]

Micellization of ionic surfactants in aqueous-rich region of organic solvants - A conductometric study of micellization behaviour of sodium dodecylsulfate in aqueous-rich region of 1-BuOH, 2-BuOH, t-BuOH at different temperatures [J].